What on Earth?

3:00 PM to 4:00 PM
Thursday 21 May
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Siberian Hell Pit

Season 3 Episode 16 of 20

A huge chasm appears in a remote part of the Siberian forest - locals call it to a gate to the underworld

What on Earth? airs on Sky History 2 HD at 3:00 PM, Thursday 21 May. (Subtitles.)
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